#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>

void swap(int *pa , int *pb)
{
	int i = 0;
	 i = *pa;
	*pa = *pb;
	*pb = i;

}

int main()
{
	int a, b;
	scanf("%d %d", &a, &b);
	printf("a = %d , b = %d \n", a, b);
	swap(&a, &b);
	printf("a = %d , b = %d ", a, b);
	return 0;
}